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XPath: Added workaround for MinGW4.5 unwind crash by removing unwind information from longjmp stack

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git-svn-id: http://pugixml.googlecode.com/svn/trunk@643 99668b35-9821-0410-8761-19e4c4f06640
This commit is contained in:
arseny.kapoulkine 2010-08-29 15:11:51 +00:00
parent 6154125dce
commit d4d82366af
1 changed files with 28 additions and 25 deletions
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53
src/pugixpath.cpp
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@ -1967,26 +1967,12 @@ namespace pugi
}
}
static const char_t* duplicate_string(const xpath_lexer_string& value, xpath_allocator& a)
{
if (value.begin)
{
size_t length = static_cast<size_t>(value.end - value.begin);
char_t* c = static_cast<char_t*>(a.alloc((length + 1) * sizeof(char_t)));
memcpy(c, value.begin, length * sizeof(char_t));
c[length] = 0;
return c;
}
else return 0;
}
public:
xpath_ast_node(ast_type_t type, xpath_value_type rettype, const xpath_lexer_string& value, xpath_allocator& a):
xpath_ast_node(ast_type_t type, xpath_value_type rettype, const char_t* value):
m_type((char)type), m_rettype((char)rettype), m_axis(0), m_test(0), m_left(0), m_right(0), m_next(0)
{
assert(type == ast_string_constant);
m_data.string = duplicate_string(value, a);
m_data.string = value;
}
xpath_ast_node(ast_type_t type, xpath_value_type rettype, double value):
@ -2001,10 +1987,10 @@ namespace pugi
{
}
xpath_ast_node(ast_type_t type, xpath_ast_node* left, axis_t axis, nodetest_t test, const xpath_lexer_string& contents, xpath_allocator& a):
xpath_ast_node(ast_type_t type, xpath_ast_node* left, axis_t axis, nodetest_t test, const char_t* contents):
m_type((char)type), m_rettype(xpath_type_node_set), m_axis((char)axis), m_test((char)test), m_left(left), m_right(0), m_next(0)
{
m_data.nodetest = duplicate_string(contents, a);
m_data.nodetest = contents;
}
void set_next(xpath_ast_node* value)
@ -2603,6 +2589,21 @@ namespace pugi
longjmp(m_error_handler, 1);
}
const char_t* duplicate_string(const xpath_lexer_string& value)
{
if (value.begin)
{
size_t length = static_cast<size_t>(value.end - value.begin);
char_t* c = static_cast<char_t*>(m_alloc.alloc((length + 1) * sizeof(char_t)));
memcpy(c, value.begin, length * sizeof(char_t));
c[length] = 0;
return c;
}
else return 0;
}
xpath_ast_node* parse_function_helper(ast_type_t type0, ast_type_t type1, size_t argc, xpath_ast_node* args[2])
{
assert(argc <= 1);
@ -2847,7 +2848,9 @@ namespace pugi
case lex_quoted_string:
{
xpath_ast_node* n = new (m_alloc.node()) xpath_ast_node(ast_string_constant, xpath_type_string, m_lexer.contents(), m_alloc);
const char_t* value = duplicate_string(m_lexer.contents());
xpath_ast_node* n = new (m_alloc.node()) xpath_ast_node(ast_string_constant, xpath_type_string, value);
m_lexer.next();
return n;
@ -2959,13 +2962,13 @@ namespace pugi
{
m_lexer.next();
return new (m_alloc.node()) xpath_ast_node(ast_step, set, axis_self, nodetest_type_node, xpath_lexer_string(), m_alloc);
return new (m_alloc.node()) xpath_ast_node(ast_step, set, axis_self, nodetest_type_node, 0);
}
else if (m_lexer.current() == lex_double_dot)
{
m_lexer.next();
return new (m_alloc.node()) xpath_ast_node(ast_step, set, axis_parent, nodetest_type_node, xpath_lexer_string(), m_alloc);
return new (m_alloc.node()) xpath_ast_node(ast_step, set, axis_parent, nodetest_type_node, 0);
}
nodetest_t nt_type = nodetest_none;
@ -3060,7 +3063,7 @@ namespace pugi
}
else throw_error("Unrecognized node test");
xpath_ast_node* n = new (m_alloc.node()) xpath_ast_node(ast_step, set, axis, nt_type, nt_name, m_alloc);
xpath_ast_node* n = new (m_alloc.node()) xpath_ast_node(ast_step, set, axis, nt_type, duplicate_string(nt_name));
xpath_ast_node* last = 0;
@ -3096,7 +3099,7 @@ namespace pugi
m_lexer.next();
if (l == lex_double_slash)
n = new (m_alloc.node()) xpath_ast_node(ast_step, n, axis_descendant_or_self, nodetest_type_node, xpath_lexer_string(), m_alloc);
n = new (m_alloc.node()) xpath_ast_node(ast_step, n, axis_descendant_or_self, nodetest_type_node, 0);
n = parse_step(n);
}
@ -3127,7 +3130,7 @@ namespace pugi
m_lexer.next();
xpath_ast_node* n = new (m_alloc.node()) xpath_ast_node(ast_step_root, xpath_type_node_set);
n = new (m_alloc.node()) xpath_ast_node(ast_step, n, axis_descendant_or_self, nodetest_type_node, xpath_lexer_string(), m_alloc);
n = new (m_alloc.node()) xpath_ast_node(ast_step, n, axis_descendant_or_self, nodetest_type_node, 0);
return parse_relative_location_path(n);
}
@ -3178,7 +3181,7 @@ namespace pugi
{
if (n->rettype() != xpath_type_node_set) throw_error("Step has to be applied to node set");
n = new (m_alloc.node()) xpath_ast_node(ast_step, n, axis_descendant_or_self, nodetest_type_node, xpath_lexer_string(), m_alloc);
n = new (m_alloc.node()) xpath_ast_node(ast_step, n, axis_descendant_or_self, nodetest_type_node, 0);
}
// select from location path